Potted Gardenia You have mold, friend Its all good though were going to get you right :), , A question that I get pretty often is Paige, what is this white stuff growing on the top of my potting soil?, Important aspects of signalling across cell membranes in plants Sap plants rubber hi res stock photography and images Alamy Looks like bamboo but it's not! The tall, cane like plants you may see along the Rio Grande in Big Bend are Arundo donax, also known as Giant Reed. Though it resembles